I have no power and black smoke when accelerates, fault

I have no power and black smoke when accelerates, fault showed as brake light switch which has now been replaced but still no power

Mechanic's Assistant: Is the power loss consistent, or does it fluctuate?

To begin with i was just like missing a bit when accelerating but now i can only drive about 35mph and its going through alot more fuel

Mechanic's Assistant: What is the model/year of your Mitsubishi?

Outlander warrior 2007

Mechanic's Assistant: Are you fixing your Outlander yourself? What have you tried so far?

The engine light came on and it was just missing a bit when accelerated, diagnostics said brake light switch which was replaced today but then very black smoke started when he revved it up so he thought it must be egr valve

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Black smoke is fairly uncommon on a gasoline engine. It's normally only caused by a large amount of un-burned fuel. Unless your outlander is a diesel. I see you are from the UK, we don't have a diesel version of the Outlander here in the US.

Ok. In that case the most likely cause would be a plugged fuel injector. If an injector hangs open for too long then it will cause a ton of black smoke when the unburned fuel hits the exhaust system. When you checked for trouble codes you didn't see anything fuel related?

My reference material doesn't cover the diesel engine, so I have very little to send you, but essentially you will need to determine which cylinder is low on power and address any fuel injector or glow plug related issue. If you aren't seeing any trouble codes for fuel issues, then I would suspect it isn't severe enough to detect a misfire, so your first steps might be to try a fuel system cleaner to see if you can loosen up the blockage.

Ask Your Own UK Car Question

Customer reply replied 2 months ago

thanks anyway but i think it may be the erg valve as ive looked it up and all the syptoms point towards that so i will get it replaced and see how i go. As you dont cover diesel engines i assume i will get a refund?

I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Marty

European Car Expert

417 satisfied customers

ASE & Bosch Certified Master Tech. Over 30 years experience.

Greg

Shop Owner

1,323 satisfied customers

17 years Shop Owner /Technician. 27 years experience,

Richard

UK Car Mechanic

615 satisfied customers

12 years as a technician at a Ford and Jaguar dealer Ford and Jaguar factory certified

Second opinion] Thanks Mine is a 1992 W140 300SE In the morning when I get into the car, I smell fuethus goes away after a few minuits But then, when I tilt the sunroof, or open the windows, I get a s… read more

Hi guys, this is Lizette speaking. Yesterday my Mercedes A180 diesel (2007 model), a light first start to flash and after a while it just stayed on with a message ESP inoperative, what does it mean an… read more

645i 2003 fault crankshaft sensor wont start JA: Does the vehicle stall at low speeds? Does it sputter? Customer: just wont start JA: What is the model of your '03 BMW? Customer: e63 JA: Are you fixin… read more

Another Garage fitted new disc and pads and bled the brakes, symptoms are rock hard pedal with no servo operation, we have fitted a known good vacuum pump, and checked the servo valve, we now have goo… read more

my seat belt stuck can't pull it out JA: Which belt is acting up? And when was it last changed? Customer: driver seat of my X1 JA: What is the model/year of your BMW? Customer: 2011 JA: Are you fixing… read more

Hi my 308 done 99k on clock..deposition faulty sign keeps coming on..tried to take in long runs as opposed to town driving but it's still stays on majority of the time..is this expensive to fix? … read more

all wiring been checked I had a pump fitted long time ago as brakes were locking on the rec pump was fine but abs light was on and brakes shuddered when applied apply brake again and brakes was fine b… read more

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.